Hemp seed protein powder preparation screening device

Abstract

A kind of hemp seed protein powder preparation is with screening device, belong to hemp seed deep processing equipment technical field, shell upper end is open, shell lower end is equipped with discharge port, shell is connected with top, motor one is on top, motor one is connected with rotating rod one, rotating rod one is threaded through filter mechanism one, filter mechanism two and filter mechanism three and is connected, rotating rod one is equipped with scraper mechanism, fixed frame is connected with bearing, fixed frame is fixed at discharge port, bearing is equipped with fixed plate one, fixed plate one is equipped with threaded hole one, rotating rod one is equipped with threaded hole two, fastening mechanism is screwed into threaded hole one and threaded hole two, top is opened with placing opening, distributing mechanism is detachably connected with placing opening, shell is opened with square socket, cleaning mechanism is arranged in square socket.The utility model has the advantages of structural optimization and function synergy, which can improve product quality, ensure stable operation, reduce maintenance and energy consumption cost, effectively meet the actual needs of hemp seed protein powder screening production, and has strong practicality.

Description

Technical Field

[0001] This utility model belongs to the technical field of hemp seed deep processing equipment, specifically a screening device for preparing hemp seed protein powder. Background Technology

[0002] With the growing popularity of healthy eating concepts, plant protein has become a favorite among many consumers and food processing companies due to its advantages such as low fat, low cholesterol, and rich dietary fiber. As a plant resource with high nutritional value, hemp seeds, rich in high-quality protein, have shown broad application prospects in the fields of food and health products. Consequently, the development and production of hemp seed protein powder has become a hot topic in the industry.

[0003] In the preparation of hemp seed protein powder, the screening process is a key step to ensure product quality. The purpose of screening is to remove impurities, insufficiently broken particles, and protein powder that does not meet the particle size requirements from the raw materials, thereby obtaining pure, uniform, and high-quality hemp seed protein powder. However, the existing screening devices on the market have many problems that need to be solved when applied to the preparation of hemp seed protein powder.

[0004] On the one hand, the screening accuracy of some screening devices is insufficient. Due to the narrow particle size distribution range of hemp seed protein powder and the tendency of protein particles to agglomerate due to adsorption forces to form "pseudo-large particles", the requirements for screening accuracy and anti-agglomeration ability are higher. However, existing devices are difficult to accurately separate particles of different sizes, resulting in the presence of larger particles or fine impurities in the final product, which affects the taste and quality stability of the protein powder and cannot meet the strict standards of "no impurities and uniform particle size" for raw materials in high-end protein powder drinks, nutritional supplements and other products.

[0005] On the other hand, low screening efficiency is also a major drawback of existing equipment. Some traditional screening equipment uses a single-layer screen or a simple vibration screening method, which has a limited processing capacity and is prone to screen blockage during the screening process, requiring frequent shutdowns for cleaning. This not only increases production time and labor costs, but also leads to poor batch stability due to production interruptions, further reducing overall production efficiency and making it difficult to meet the needs of large-scale industrial continuous production. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model provides a screening device for preparing hemp seed protein powder.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a screening device for preparing hemp seed protein powder, comprising a shell, a top, a motor, a rotating rod, a fixed frame, a bearing, a fixed plate, a filter mechanism, a filter mechanism, a filter mechanism, a fastening mechanism, a material distribution mechanism, two scraper mechanisms, and three cleaning mechanisms.

[0008] The upper end of the shell is open, and the lower end of the shell has a discharge port. The shell is fixedly connected to the top by bolts. A motor is fixed on the top, and the output shaft of the motor is fixedly connected to a rotating rod. The lower end of the rotating rod passes through and is fixedly connected to a filter mechanism, a filter mechanism, and a filter mechanism, respectively. Both sides of the rotating rod are provided with scraper mechanisms. The two scraper mechanisms are slidably fitted against the inner bottom surface of the shell. The fixing frame is fixedly connected to the outer wall of the outer ring of the bearing and is fixed at the discharge port. The inner ring of the bearing is provided with a fixing plate, which has a threaded hole. The lower end of the rotating rod has a threaded hole. The fastening mechanism is screwed into the threaded hole and the threaded hole. A placement port is opened on the top. The material distribution mechanism is detachably connected to the placement port. Three square insertion ports are opened from top to bottom on the side wall of the shell. Each square insertion port is provided with a cleaning mechanism. The three cleaning mechanisms are located below the filter mechanism, the filter mechanism, and the filter mechanism, respectively, and work together.

[0009] The filtration mechanism includes a disc filter frame, an annular frame, a sealing ring, and a shovel plate.

[0010] The disc filter frame has a through hole in the center and is fixedly mounted on the rotating rod. The outer wall of the disc filter frame is rotatably and sealed to the inner wall of the annular frame. The outer wall of the annular frame is fixedly connected to a sealing ring. The inner wall of the annular frame is inclined toward the disc filter frame. The shovel plate is fixedly connected to the inner wall of the annular frame. The lower end of the shovel plate is slidably fitted to the upper end of the disc filter frame. The lower end of the disc filter frame is used in conjunction with a corresponding cleaning mechanism. The inner wall of the housing has an annular groove. The sealing ring is engaged and fixedly engaged with the annular groove.

[0011] The second filtration mechanism includes a second disc filter screen frame, a second annular frame, a second sealing ring, and a second shovel plate;

[0012] The second disc filter frame has a through hole in its center and is fixedly mounted on the first rotating rod. The filter mesh diameter of the second disc filter frame is smaller than that of the first disc filter frame. The outer wall of the second disc filter frame is rotatably and sealingly connected to the inner wall of the second annular frame. The outer wall of the second annular frame is fixedly connected to the second sealing ring. The inner wall of the second annular frame is inclined toward the second disc filter frame. The second shovel plate is fixedly connected to the inner wall of the second annular frame. The lower end of the second shovel plate is slidably fitted against the upper end of the second disc filter frame. The lower end of the second disc filter frame is used in conjunction with the corresponding cleaning mechanism. The inner wall of the housing has an annular groove. The second sealing ring is engaged and fixedly connected to the annular groove.

[0013] The filtration mechanism three includes a disc filter screen frame three, an annular frame three, a sealing ring three, and a shovel plate three;

[0014] The disc filter frame three has a through hole three in the center and is fixedly mounted on the rotating rod one. The filter mesh diameter of the disc filter frame three is smaller than that of the disc filter frame two. The outer wall of the disc filter frame three is rotatably connected to the inner wall of the annular frame three. The outer wall of the annular frame three is fixedly connected to the sealing ring three. The inner wall of the annular frame three is inclined towards the disc filter frame three. The shovel plate three is fixedly connected to the inner wall of the annular frame three. The lower end of the shovel plate three is slidably attached to the upper end of the disc filter frame three. The lower end of the disc filter frame three is used in conjunction with the corresponding cleaning mechanism. The inner wall of the housing has an annular groove three. The sealing ring three is engaged and fixedly connected to the annular groove three.

[0015] Each of the scraper mechanisms includes a connecting frame and a scraper;

[0016] One end of the connecting frame is fixedly connected to the outer wall of the rotating rod, and the other end of the connecting frame is fixedly connected to the scraper. The scraper is slidably fitted against the inner bottom surface of the housing.

[0017] The fastening mechanism includes a rotating rod, a boss, a rubber ring, and a bolt rod.

[0018] The upper end of the rotating rod is provided with a boss. The upper end of the boss is fixedly connected to one end of the bolt rod. The rubber ring is fitted on the bolt rod and fits against the boss. The other end of the bolt rod is screwed into threaded hole one and threaded hole two in sequence.

[0019] The material distribution mechanism includes a material distribution bin, a star roller, and a second motor.

[0020] The material distribution bin is detachably connected to the placement port. The star-shaped roller is horizontally arranged inside the material distribution bin. One end of the star-shaped roller is rotatably connected to the inner wall of the material distribution bin, and the other end of the star-shaped roller is fixedly connected to the output shaft of the second motor. The second motor is fixed on the material distribution bin.

[0021] Each of the cleaning mechanisms includes an insert rod, a brush roller, and a fixing plate.

[0022] The insertion rod is a regular square prism and is inserted into and limited by a corresponding square socket. One end of the insertion rod is rotatably connected to the brush roller. The brush roller is positioned below the corresponding disc filter frame one, disc filter frame two, or disc filter frame three. The side wall of the insertion rod is fixedly connected to the fixing plate two. The fixing plate two has a fixing hole and is fixedly connected to the outer wall of the housing by bolts in the fixing hole.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. Achieve gradient grading and screening to improve product particle size uniformity: This device adopts a three-layer disc filter frame with decreasing pore size (filtration mechanism one to three) to sequentially complete the coarse sieving, fine sieving and fine sieving of hemp seed protein powder. It can selectively separate materials of different particle sizes, making the final product more uniform in particle size and meeting the requirements of different application scenarios for protein powder particle size.

[0025] 2. Ensure product purity and prevent material cross-contamination: Each filter layer is connected to the housing ring groove by a sealing ring, and the disc filter frame is sealed and rotated with the ring frame. This effectively blocks material from crossing between layers, preventing coarse screening impurities from mixing into subsequent fine screening materials, and ensuring the purity of the final product.

[0026] 3. Real-time self-cleaning filter screen to maintain stable screening efficiency: A brush roller is installed under each layer of filter screen. The brush roller is passively driven to rotate by the friction of the rotating filter screen. The bristles can penetrate the filter screen holes in real time to remove clogging particles, avoid the decrease in screening efficiency caused by filter screen clogging, and ensure the continuous and stable operation of the equipment.

[0027] 4. Dynamically break up material agglomerates to ensure full sieving: The inner wall of each ring frame is fixed with a shovel plate. The shovel plate slides in close contact with the rotating disc filter screen frame, which can continuously break up the agglomerates formed by the adsorption force between particles, avoid the problem of "false large particles" that cannot be sieved, and ensure that the material is evenly spread and fully passes through the filter screen.

[0028] 5. Quantitative and uniform material distribution protects the filter screen and stabilizes the screening process: The material distribution mechanism distributes the material evenly in fixed batches by rotating the star roller at a uniform speed, avoiding a large amount of material rushing into the shell at once, which would cause the filter screen to overload and deform, ensuring a stable screening process and reducing the risk of equipment failure.

[0029] 6. Reduce material residue and waste, and optimize discharge effect: The scraper mechanism works synchronously with the rotating rod. The scraper slides against the bottom surface of the shell, which can not only scrape the pure material after fine screening to the discharge port, but also remove the residual material adhering to the inner wall, thus avoiding material waste.

[0030] 7. Modular design facilitates maintenance and component replacement: The cleaning mechanism is limited by inserting a rod into a square socket, and the brush roller can be quickly disassembled by loosening the bolts; the material distribution bin and the top can be detached, and the filtration mechanism can be easily disassembled and assembled with the top, greatly reducing the difficulty and time cost of equipment maintenance.

[0031] 8. Simple structure and low energy consumption, reducing production and operating costs: The cleaning mechanism brush roller does not require independent power. It is driven by two motors to separate the screening and dispensing systems. Compared with complex power equipment, it has lower energy consumption. Long-term operation can reduce the company's electricity expenses and reduce production costs.

[0032] In summary, this utility model, through structural optimization and functional synergy, has significant advantages in improving product quality (uniformity and purity), ensuring operational stability, and reducing maintenance and energy costs. It can effectively meet the actual needs of hemp seed protein powder screening and production, and is highly practical. Attached Figure Description

[0033] Figure 1This is a front view of the present invention;

[0034] Figure 2 yes Figure 1 A magnified view of part A;

[0035] Figure 3 This is a schematic diagram of the filter mechanism of this utility model;

[0036] Figure 4 This is a top view of the top of this utility model;

[0037] Figure 5 This is a schematic diagram of the material distribution mechanism of this utility model;

[0038] Figure 6 This is a schematic diagram of the fastening mechanism structure of this utility model;

[0039] Figure 7 This is a schematic diagram of the cleaning mechanism structure of this utility model. Detailed Implementation

[0040] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0041] This embodiment describes a screening device for preparing hemp seed protein powder, including a shell 1, a top 2, a motor 3, a rotating rod 4, a fixing frame 11, a bearing 12, a fixing plate 13, a first filter mechanism, a second filter mechanism, a third filter mechanism, a fastening mechanism, a material distribution mechanism, two scraper mechanisms, and three cleaning mechanisms.

[0042] The upper end of the housing 1 is open, and the lower end of the housing 1 has a discharge port. The housing 1 is fixedly connected to the top cap 2 by bolts. A motor 3 is fixed on the top cap 2. The output shaft of the motor 3 is fixedly connected to a rotating rod 4. The lower end of the rotating rod 4 passes through and is fixedly connected to a first filter mechanism, a second filter mechanism, and a third filter mechanism. Both sides of the rotating rod 4 are provided with scraper mechanisms. Both scraper mechanisms are slidably fitted against the inner bottom surface of the housing 1. The fixing frame 11 is fixedly connected to the outer ring wall of the bearing 12. At the discharge port, the inner ring of the bearing 12 is provided with a fixing plate 13, the fixing plate 13 is provided with a threaded hole 1, the lower end of the rotating rod 4 is provided with a threaded hole 2, the fastening mechanism is screwed into the threaded hole 1 and the threaded hole 2 in sequence, the top 2 is provided with a placement port 18, the material distribution mechanism is detachably connected to the placement port 18, the side wall of the housing 1 is provided with three square insertion ports from top to bottom, each square insertion port is provided with a cleaning mechanism, the three cleaning mechanisms are respectively located below the filter mechanism 1, filter mechanism 2 and filter mechanism 3 and are used in conjunction.

[0043] The filtration mechanism includes a disc filter screen frame 5, an annular frame 6, a sealing ring 7, and a shovel plate 8.

[0044] The disc filter frame 5 has a through hole in the center and is fixedly mounted on the rotating rod 4. The outer wall of the disc filter frame 5 is rotatably connected to the inner wall of the annular frame 6. The outer wall of the annular frame 6 is fixedly connected to the sealing ring 7. The inner wall of the annular frame 6 is inclined towards the disc filter frame 5. The shovel plate 8 is fixedly connected to the inner wall of the annular frame 6. The lower end of the shovel plate 8 is slidably fitted to the upper end of the disc filter frame 5. The lower end of the disc filter frame 5 is used in conjunction with the corresponding cleaning mechanism. The inner wall of the housing 1 has an annular groove. The sealing ring 7 is engaged and fixedly connected to the annular groove.

[0045] The second filtration mechanism includes a disc filter screen frame 501, an annular frame 601, a sealing ring 701, and a shovel plate 801.

[0046] The disc filter frame 2 501 has a through hole 2 in the center and is fixedly mounted on the rotating rod 1 4. The filter mesh diameter of the disc filter frame 2 501 is smaller than that of the disc filter frame 1 5. The outer wall of the disc filter frame 2 501 is rotatably and sealed to the inner wall of the annular frame 2 601. The outer wall of the annular frame 2 601 is fixedly connected to the sealing ring 2 701. The inner wall of the annular frame 2 601 is inclined towards the disc filter frame 2 501. The shovel plate 2 801 is fixedly connected to the inner wall of the annular frame 2 601. The lower end of the shovel plate 2 801 is slidably fitted to the upper end of the disc filter frame 2 501. The lower end of the disc filter frame 2 501 is used in conjunction with the corresponding cleaning mechanism. The inner wall of the housing 1 has an annular groove 2. The sealing ring 2 701 is engaged and fixedly connected to the annular groove 2.

[0047] The filtration mechanism includes a disc filter screen frame 502, an annular frame 602, a sealing ring 702, and a shovel plate 802.

[0048] The disc filter frame 3 502 has a through hole 3 in the center and is fixedly mounted on the rotating rod 1 4. The filter mesh diameter of the disc filter frame 3 502 is smaller than that of the disc filter frame 2 501. The outer wall of the disc filter frame 3 502 is rotatably and sealed to the inner wall of the annular frame 3 602. The outer wall of the annular frame 3 602 is fixedly connected to the sealing ring 3 702. The inner wall of the annular frame 3 602 is inclined towards the disc filter frame 3 502. The shovel plate 3 802 is fixedly connected to the inner wall of the annular frame 3 602. The lower end of the shovel plate 3 802 is slidably fitted to the upper end of the disc filter frame 3 502. The lower end of the disc filter frame 3 502 is used in conjunction with the corresponding cleaning mechanism. The inner wall of the housing 1 has an annular groove 3. The sealing ring 3 702 is engaged and fixedly connected to the annular groove 3.

[0049] Each of the scraper mechanisms includes a connecting frame 9 and a scraper 10;

[0050] One end of the connecting frame 9 is fixedly connected to the outer wall of the rotating rod 4, and the other end of the connecting frame 9 is fixedly connected to the scraper 10. The scraper 10 is slidably fitted against the inner bottom surface of the housing 1.

[0051] The fastening mechanism includes a rotating rod 14, a boss 15, a rubber ring 16, and a bolt rod 17;

[0052] The upper end of the rotating rod 14 is provided with a boss 15. The upper end of the boss 15 is fixedly connected to one end of the bolt rod 17. The rubber ring 16 is fitted on the bolt rod 17 and fits against the boss 15. The other end of the bolt rod 17 is screwed into the threaded hole one and the threaded hole two in sequence.

[0053] The material distribution mechanism includes a material distribution bin 19, a star roller 20, and a second motor 21;

[0054] The material distribution bin 19 is detachably connected to the placement port 18. The star roller 20 is horizontally arranged inside the material distribution bin 19. One end of the star roller 20 is rotatably connected to the inner wall of the material distribution bin 19, and the other end of the star roller 20 is fixedly connected to the output shaft of the second motor 21. The second motor 21 is fixed on the material distribution bin 19.

[0055] Each of the cleaning mechanisms includes a rod 22, a brush roller 23, and a fixing plate 24;

[0056] The insertion rod 22 is a regular square prism and is inserted into and limited by a corresponding square socket. One end of the insertion rod 22 is rotatably connected to the brush roller 23. The brush roller 23 is located below the corresponding disc filter frame 5, disc filter frame 501 or disc filter frame 502. The side wall of the insertion rod 22 is fixedly connected to the fixing plate 24. The fixing plate 24 has a fixing hole and is fixedly connected to the outer wall of the housing 1 by bolts in the fixing hole.

[0057] During the pre-start-up phase of this device, installation and debugging are carried out first. The cap 2 is fixed to the open end of the shell 1 with bolts. At this time, the sealing ring 7 of the first filter mechanism is inserted into the annular groove 1 on the inner wall of the shell 1, the sealing ring 701 of the second filter mechanism is inserted into the annular groove 2 on the inner wall of the shell 1, and the sealing ring 702 of the third filter mechanism is inserted into the annular groove 3 on the inner wall of the shell 1. This achieves radial sealing and positioning of the three-layer filter structure. At the same time, the lower end of the rotating rod 4 is in contact with the upper end face of the inner ring of the bearing 12 on the fixed frame 11. Then, the fastening mechanism is installed from the discharge port at the lower end of the shell 1. The bolt rod 17 is screwed into the threaded hole 1 of the fixed plate 13 and the threaded hole 2 of the rotating rod 4 in sequence. The rubber ring 16 is tightly in contact with the lower end face of the inner ring of the bearing 12 to achieve axial fixation of the rotating rod 4 and ensure that it does not move when rotating.

[0058] Subsequently, the cleaning mechanism and the material distribution mechanism are assembled. The insertion rods 22 (square prism structure) of each cleaning mechanism are inserted into the square insertion holes below the corresponding disc filter frame to achieve circumferential positioning. The position of each brush roller 23 is adjusted so that the bristles of the corresponding brush roller 23 (the bristle length is slightly greater than the filter thickness) are accurately inserted into the filter holes of the disc filter frame 5 of the first filter mechanism, the disc filter frame 201 of the second filter mechanism, and the disc filter frame 302 of the third filter mechanism. Then, the cleaning mechanism is rigidly fixed by bolts to the outer wall of the housing 1 through the fixing holes on the fixing plate 24. At the same time, the material distribution bin 19 is detachably connected to the placement port 18 of the top 2 to ensure that the star roller 20 is horizontally placed in the material distribution bin 19, and the output shaft of the motor 21 is fixed to one end of the star roller 20, forming a stable material distribution power system.

[0059] After entering the core workflow, the first stage is the material distribution stage. Motor 21, powered by an external power source, drives the star-shaped roller 20 to rotate at a constant speed within the distribution bin 19. The hemp seed protein powder to be screened is poured into the distribution bin 19. The toothed grooves of the star-shaped roller 20 distribute the material evenly in fixed batches, preventing a large influx of material into the housing 1 that could overload the filter screen and providing a uniform material base for subsequent gradient screening. Next, the material enters the primary screening stage (filtration mechanism one). The distributed material first falls into the uppermost disc filter frame 5 (with the largest filter screen aperture, such as 80-100 mesh, used for coarse screening). Motor 3, powered by an external power source, drives the rotating rod 4 to rotate at a constant speed, thereby driving the disc filter screen. The ring frame 5 rotates synchronously. Due to the static friction between the sealing ring 7 and the corresponding annular groove 1, the ring frame 6 remains relatively stationary (or rotates very slowly). The lower end of the shovel plate 8, fixed to the inner wall of the ring frame 6, slides against the upper surface of the disc filter screen frame 5, continuously shoveling and dispersing the material rotating with the filter screen (because there is static friction between the sealing ring and the annular groove, the rotation amplitude of the ring frame with the filter screen is much smaller than that of the filter screen, which does not affect the relative sliding and agglomeration breaking effect of the shovel plate and the filter screen). This prevents the hemp seed protein powder from agglomerating and clumping due to the adsorption force between particles, ensuring that the material is evenly spread on the surface of the filter screen without local accumulation. At the same time, the brush roller 23 below the disc filter screen frame 5 is driven to rotate by the friction of the rotating filter screen, and the bristles continuously scoop up the material. Large particles stuck in the filter screen holes are pushed out, preventing filter clogging and reduced screening efficiency. Large particles that do not pass through the filter remain on the surface of the disc filter frame 5 and can be disassembled and cleaned after screening. Medium and fine particles that pass through the disc filter frame 5 fall vertically to the middle disc filter frame 501 under gravity; they then enter the secondary screening (filtration mechanism 2). The filter screen aperture of disc filter frame 2 501 is smaller than that of disc filter frame 5 (e.g., 120-150 mesh), used to achieve the "fine screening" function. At this time, the annular frame 601 remains relatively stationary (or rotates very slowly) under the positioning action of the sealing ring 701 and the corresponding annular groove 2. The shovel plate 8... 01. The upper surface of the second disc filter frame 501 slides, further breaking up slight agglomeration of finer particles that are prone to clumping. This ensures that the material evenly covers the filter screen and prevents fine particles from forming "pseudo-large particles" that cannot pass through the filter screen due to agglomeration. At the same time, the brush roller 23 of the corresponding cleaning mechanism is driven to rotate by the friction of the second disc filter frame 501. Its bristles are adapted to the small pores of the filter screen and are precisely inserted into the holes to remove the fine particles remaining in the holes. (Because the particles in the secondary screening are finer and easily adsorbed on the hole walls, the continuous unblocking by the brush roller 23 can ensure the permeability of the filter screen holes and maintain a stable screening throughput.) The finer particles that have passed through the secondary screening fall to the lower disc filter frame 502.Afterwards, the material undergoes three screening processes (filtration mechanism three). The disc filter frame three 502 has the smallest mesh size (e.g., 180-200 mesh), serving as the "final fine sieve" to achieve purity enhancement of the hemp seed protein powder. The annular frame three 602 remains relatively stationary (or rotates very slowly) under the action of the sealing ring three 702 and the corresponding annular groove three. The shovel plate three 802 slides against the upper surface of the disc filter frame three 502, thoroughly breaking down any possible micro-agglomerations for extremely fine material particles. This ensures that every protein powder particle meeting the particle size requirements can pass through the filter, preventing high-quality material from being mistakenly retained. Simultaneously, the brush roller 23 of the corresponding cleaning mechanism is driven to rotate by the rotational friction of the disc filter frame three 502. Its bristles are adapted to the smallest pore size filter screen, continuously removing extremely fine particles adsorbed within the pores, preventing the filter screen from becoming clogged and causing "incomplete sieving," ensuring the uniformity and purity of the material's particle size after three sieving stages. After the material completes three sieving stages, it enters the discharge and anti-sticking stage. The pure hemp seed protein powder that has passed through three sieving stages falls into the inner bottom surface of the shell 1. At this time, the scraper mechanism fixed with the rotating rod 4 works synchronously. The connecting frame 9 drives the scraper 10 to slide against the inner bottom surface of the shell, scraping the accumulated material towards the discharge port, while simultaneously removing material adhering to the inner wall, avoiding material residue that could lead to waste or cross-contamination in subsequent batches. Finally, the pure material is stably discharged through the discharge port at the lower end of the shell 1, completing the entire sieving process.

[0060] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A screening device for preparing hemp seed protein powder, characterized in that: It includes a housing (1), a top (2), a motor (3), a rotating rod (4), a fixed frame (11), a bearing (12), a fixed plate (13), a filter mechanism (1), a filter mechanism (2), a filter mechanism (3), a fastening mechanism, a material distribution mechanism, two scraper mechanisms, and three cleaning mechanisms; The upper end of the shell (1) is open, and the lower end of the shell (1) is provided with a discharge port. The shell (1) is fixedly connected to the top (2) by bolts. A motor (3) is fixed on the top (2). The output shaft of the motor (3) is fixedly connected to a rotating rod (4). The lower end of the rotating rod (4) passes through the first filter mechanism, the second filter mechanism, and the third filter mechanism in sequence and is fixedly connected. Both sides of the rotating rod (4) are provided with scraper mechanisms. The two scraper mechanisms are slidably fitted against the inner bottom surface of the shell (1). The fixing frame (11) is fixedly connected to the outer ring wall of the bearing (12). (11) Fixed at the discharge port, the inner ring of the bearing (12) is provided with a fixing plate (13), the fixing plate (13) is provided with a threaded hole, the lower end of the rotating rod (4) is provided with a threaded hole, the fastening mechanism is screwed into the threaded hole and the threaded hole in sequence, the top (2) is provided with a placement port (18), the material distribution mechanism is detachably connected to the placement port (18), the side wall of the housing (1) is provided with three square insertion ports from top to bottom, each square insertion port is provided with a cleaning mechanism, the three cleaning mechanisms are located below the filter mechanism one, filter mechanism two and filter mechanism three respectively and are used in conjunction.

2. The screening device for preparing hemp seed protein powder according to claim 1, characterized in that: The filtration mechanism includes a disc filter screen frame (5), an annular frame (6), a sealing ring (7), and a shovel plate (8). The disc filter frame (5) has a through hole in the center and is fixedly mounted on the rotating rod (4). The outer wall of the disc filter frame (5) is sealed and rotatably connected to the inner wall of the ring frame (6). The outer wall of the ring frame (6) is fixedly connected to the sealing ring (7). The inner wall of the ring frame (6) is inclined towards the disc filter frame (5). The shovel plate (8) is fixedly connected to the inner wall of the ring frame (6). The lower end of the shovel plate (8) is attached to the upper end of the disc filter frame (5) and slides. The lower end of the disc filter frame (5) is used in conjunction with the corresponding cleaning mechanism. The inner wall of the housing (1) is provided with an annular groove. The sealing ring (7) is engaged and fixedly connected to the annular groove.

3. The screening device for preparing hemp seed protein powder according to claim 1, characterized in that: The second filtration mechanism includes a second disc filter screen frame (501), a second annular frame (601), a second sealing ring (701), and a second shovel plate (801). The disc filter frame 2 (501) has a through hole 2 in the center and is fixedly mounted on the rotating rod 1 (4). The filter hole diameter of the disc filter frame 2 (501) is smaller than that of the disc filter frame 1 (5). The outer wall of the disc filter frame 2 (501) is sealed and rotatably connected to the inner wall of the annular frame 2 (601). The outer wall of the annular frame 2 (601) is fixedly connected to the sealing ring 2 (701). The inner wall of the annular frame 2 (601) is inclined towards the disc filter frame 2 (501). The shovel 2 (801) is fixedly connected to the inner wall of the annular frame 2 (601). The lower end of the shovel 2 (801) is attached to the upper end of the disc filter frame 2 (501) and slides. The lower end of the disc filter frame 2 (501) is used in conjunction with the corresponding cleaning mechanism. The inner wall of the housing (1) is provided with an annular groove 2. The sealing ring 2 (701) is engaged and fixed with the annular groove 2.

4. The screening device for preparing hemp seed protein powder according to claim 1, characterized in that: The filtration mechanism three includes a disc filter screen frame three (502), an annular frame three (602), a sealing ring three (702), and a shovel plate three (802). The disc filter frame three (502) has a through hole three in the center and is fixedly mounted on the rotating rod one (4). The filter hole diameter of the disc filter frame three (502) is smaller than that of the disc filter frame two (501). The outer wall of the disc filter frame three (502) is sealed and rotatably connected to the inner wall of the annular frame three (602). The outer wall of the annular frame three (602) is fixedly connected to the sealing ring three (702). The inner wall of the annular frame three (602) is inclined towards the disc filter frame three (502). The shovel plate three (802) is fixedly connected to the inner wall of the annular frame three (602). The lower end of the shovel plate three (802) is attached to the upper end of the disc filter frame three (502) and slides. The lower end of the disc filter frame three (502) is used in conjunction with the corresponding cleaning mechanism. The inner wall of the housing (1) is provided with an annular groove three. The sealing ring three (702) is engaged and fixed with the annular groove three.

5. The screening device for preparing hemp seed protein powder according to claim 1, characterized in that: Each of the scraper mechanisms includes a connecting frame (9) and a scraper (10); One end of the connecting frame (9) is fixedly connected to the outer wall of the rotating rod (4), and the other end of the connecting frame (9) is fixedly connected to the scraper (10). The scraper (10) is slidably fitted to the inner bottom surface of the housing (1).

6. The screening device for preparing hemp seed protein powder according to claim 1, characterized in that: The fastening mechanism includes a rotating rod (14), a boss (15), a rubber ring (16), and a bolt rod (17). The upper end of the rotating rod (14) is provided with a boss (15). The upper end of the boss (15) is fixedly connected to one end of the bolt rod (17). The rubber ring (16) is fitted on the bolt rod (17) and fits against the boss (15). The other end of the bolt rod (17) is screwed into the threaded hole one and the threaded hole two in sequence.

7. The screening device for preparing hemp seed protein powder according to claim 1, characterized in that: The material distribution mechanism includes a material distribution bin (19), a star roller (20), and a second motor (21). The material distribution bin (19) is detachably connected to the placement port (18). The star roller (20) is horizontally arranged inside the material distribution bin (19). One end of the star roller (20) is rotatably connected to the inner wall of the material distribution bin (19), and the other end of the star roller (20) is fixedly connected to the output shaft of the second motor (21). The second motor (21) is fixed on the material distribution bin (19).

8. The screening device for preparing hemp seed protein powder according to claim 1, characterized in that: Each of the cleaning mechanisms includes a plug (22), a brush roller (23), and a fixing plate (24); The insertion rod (22) is a regular square prism and is inserted into and limited by the corresponding square insertion port. One end of the insertion rod (22) is rotatably connected to the brush roller (23). The brush roller (23) is located below the corresponding disc filter frame one (5), disc filter frame two (501) or disc filter frame three (502). The side wall of the insertion rod (22) is fixedly connected to the fixing plate two (24). The fixing plate two (24) has a fixing hole. The fixing plate two (24) is fixedly connected to the outer wall of the shell (1) by bolts in the fixing hole.

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